Is Miralax a Stimulant Laxative?

Is Miralax a Stimulant laxative?

If you are wondering if Miralax is a stimulant laxative, I will answer that question here.

Miralax isn’t a stimulant laxative, but an osmotic one.

Stimulant Laxatives vs Osmotic

Stimulant laxatives are different from osmotic laxatives and they work in slightly different ways. Osmotic laxatives work by drawing water into the intestines to soften stools and stimulate peristalsis. They also draw fluid out of the cells lining the intestine, which can cause diarrhea.

Stimulant laxatives have an opposite effect because they speed up intestinal contractions by stimulating nerves in the colon or relaxing muscles along its walls. The result is bowel movement within one hour of taking it!

One example of a stimulant laxative is Senna.

Senna stimulates your colon and can cause diarrhea, nausea, vomiting, abdominal cramping or uncomfortable bloating – but it’s fast acting! Another type of stimulant laxatives are the glycerin suppositories which dissolve in the rectum to lubricate and soften stool as they pass through the anal canal- this process takes about 15 minutes.

Another one that you may have heard of before is Dulcolax aka Milk of Magnesia. The active ingredient magnesium citrate works by drawing water into the intestines while also softening stools; these two actions work together to make bowel movements easier for people with constipation problems. This drug will not produce an immediate effect.

Miralax is an osmotic laxative. It can be a slow acting or quick acting, depending on the dosage and timing.

Quick acting osmotic laxatives pull water into your intestines, adding volume to the stool and making it softer. This causes bowel movements that come more quickly than they do without a medication like this one.

The quick-acting oral tablets are an excellent choice for people who need fast relief from occasional constipation or if you have trouble swallowing pills (a chaser of lemonade is often recommended). Longer term use can lead to dependency .

This type of laxative works by drawing in fluids from other parts of the body through the colon walls where fluid levels may be low because there’s not enough dietary intake or urine output. When these liquids get inside the colon, they increase its bulk which leads to looser stools and easier to pass.

These laxatives can be called stimulant or osmotic, depending on how they work. Stimulant laxatives help move more water into the colon to soften stool and stimulate bowel movements by irritating the lining of the large intestine; an example is senna (which may cause abdominal cramps).

Miralax works in different ways than those mentioned above – it makes things happen gently rather than quickly but it does accomplish its goal which is relief for constipation .


Miralax is not a stimulant laxative because it works differently and acts as an osmotic laxative. Stimulant laxatives are for those who need to have bowel movements ASAP and they’re fast acting, so that means miralax isn’t one of them!

Senna – as an example of stimulant laxative – stimulates your colon but can cause diarrhea etc., glycerin suppositories lubricates the stool along with making them soft by drawing water into the intestines, dulcolax aka milk of magnesia will only work after 15 minutes.

Miralax is best used in cases where you don’t want to go immediately BUT when you do let loose eventually there’ll be no problem at all!

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